Both, but of course favoring the trend unless the range is really wide. There is one type of trade that I'm exploring which is a REV trade based on a rejection of a prominent level. SLA would still get you into the trade because eventually you will have a line break with a RET setting up.
This isn't entirely true.
Let's not get into explanations. That defeats the purpose of the thread. Those who are interested can read the pdf. Those who are only looking for an argument can find it elsewhere.